The only way to 'control' headspace with rimmed cartridges is to adjust the sizing die to headspace on a shoulder, unless one wants to use minimal rim thickness cut and turn each case to fit.In most all cases, a "rimmed" cartridge has greater accuracy potential in a break open single shot because it allows for better control over headspace...A
If you are interested I have a 16 1/2 " Bullberry .221 fireball barrel I am looking to get rid of. You can shoot it like it is or have David (assassin) cut a rim in the chamber and size .357 max brass down. You would actually be able to shoot both cases once the rim is cut. Make you a reasonable deal on the barrel too.Greetings all,
Anybody do any work with this cartridge utilizing 357 Max brass necked down and sized in a 221 FB Die?
Looking to try something like this in a Contender pistol.
Thanks for any info.
I would think this would be especially true with fire-formed brass. My unrimmed 221 Fireball is wonderfully accurate with my handloads.As both the .221/.357 max and the .221 FB headspace on the shoulder in a Contender it is doubtful you could prove one design more accurate than the other. I heard it...but I don't believe it.